摘要
以丙烯酰胺(AM)、对苯乙烯磺酸钠(SSS)和烯丙基聚乙二醇(APEG)为单体,经水溶液聚合法合成了具有不同侧链长度的新型聚酰胺梳形高分子分散剂(PAM-700,1 000,1 200,2400),采用红外、凝胶色谱、热重和差热法表征了分散剂结构和热稳定性;以水煤浆粘度仪、析水率法研究了不同侧链长度聚酰胺分散剂对神府煤浆的分散、稳定性能;使用视频润湿角仪和zeta电位仪研究了分散剂在煤面的润湿性能和水煤浆zeta电位.结果表明,PAM-1000分散效果最好,其分子量Mw为3.32×104~,对神府煤制65%水煤浆,当其用量在0.35%时降粘效果最佳,其粘度为417 m Pa·s,7天析水率2.88%,比萘磺酸盐有更好的分散稳定性.
The structure and thermal stability of the dispersing agent were characterized by infrared spectrum,gel permeation chromatography,thermal and differential thermal method.The dispersion,stable performance of different length of side chain polyamide dispersants on Shenfu coal slurry were analyzed by coal-water slurry viscometer,analysis of water rate method.The wetting properties of dispersant on coal surface and zeta potential of CWS were studied by video contact angle analyzer and zeta potential instrument.The results show that the best dispersion is PAM-1000,when the molecular weight of dispersant is 3.32×10~4,the concentration of CWS on Shenfu coal can reach 65%,when the optimum dosage of dispersant is 0.35%,it has best viscosity reduction,the viscosity is 417 m Pa ·s,after 7 days the analysis of water rates is 2.88%,better dispersion stability than naphthalene sulfonate.
出处
《陕西科技大学学报（自然科学版）》
2017年第2期92-97,共6页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(21303098)
陕西省科技厅自然科学基金项目(2014JM2040)
陕西科技大学博士科研启动基金项目(BJ13-04)
关键词
水煤浆
聚酰胺梳形高分子
新型分散剂
粘度
接触角
coal water slurry
comb-like polyamide polymer
a novel dispersant
viscosity
contact angle
